Collapsible head-wall form



G. F. ZAUN.

COLLAPSIBLE HEAD WALL FORM.

APPLlCATlON FILED JUNE 1, 1920.

1,389,543, 7 Pa tented Aug. 30,1921.

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' Ali Jory G. F. ZAU N.

COLLAPSIBLE HEAD WALL FORM.

APPLICATION men mm; 1.-1920.

1 3 9 543 Patented Aug. 30, 1921.

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UNITED STATES GEORGE F. ZAUN, OF SAN BERNARDINO, CALIFORNIA.

COLLAPSIBLE HEAD-VIML FORM.

Specification of Letters Patent.

Application filed June 1, 1920. Serial No. 385,736.

T 0 all whom it may concern Be it known that I, GEORGE F. ZAUN, a citizen of the United States, residing at San Bernardino, in the county of San Bernardino and State of California, have invented new and useful Improvements in Collapsible Head-3V all Forms, of which the following is a specification. I i

This invention relates to collapsible head wall forms, and particularlyto head wall forms for culverts. The invention has for an object the provision of a head wall form which may be quickly erected and dismantled and which maybe made into any size within certain limits, where a culvert is re-, quired. Another object is the provision of a collapsible head wall form which may be erected or dismantled by unskilled laboran d which may be either erected o1 dismantled within a minimum of time.

In practising the inventionthe collapsible head wall form comprises a -mold structure including a pair of wall members each formed of a plurality of sections, each section of which is detachably arranged one above the other. In addition, the head wall proper is provided withtwo wing portions detachably mounted to one of the head wall side walls. Means such as lock barscooperate with clips on sections'o'f the side walls and act as retaining means for keeping the side wallsections in alinement with one an other. Further means such as spacer irons divide the side walls and serve to retain the two side wall members: in a fixed relation to each other. After the head wall form with its two wing portions have been completely assembled, concrete is poured into the open top portion of thehead wall and the con erete flows through certain openings in the head wall into the interior mold portion of the wing sections. Each aving section is provided with a grooved portion within which cap boards are placed, and these cap boards tend to prevent any of the concrete from overflowing thetop portion of the interior of the wing sections. It has been found that a doubleculvert collapsible head wall form including wing sections may be erected byunskilled labor, using two men in little over two hours time. Formerly it has been necessary to deliver lumber to the place'where it is desired to erect a culvert and have skilled labor proceed to construct the necessary mold for the concrete. This always requires some two daystime, and thus it will be seen that there is a great savmg 111 time and labor whenithis collapsible head wall form is used. The particular head wall form, to be described, conforms to certam standards known as the Atc'hison, Toe peka Santa F e Railway standards. In fact, in the operation, I shall point out ten different ehang'esfin size'that may be made with this collapsible head wall form; that is, there are live complete changes in size for a double culvertand five complete changes in size for a single culvert. A

The invention has for further objects the provision of an improved collapsible head wall which will besuperior in point of relative s mplicity and inexpensiveness, taken in con]unction with utility, durability and general. efficiency and serviceability.

Vllith the above'and'other objects in view, the invention consists inthe novel anduseful provision,formation, construction, combination. association and intei relation of parts, members and features, all as hereinafter-described, shown in thedrawing, and finally pointed out in claims. i

In the drawing; ..Figure 1 is a front elevation of a collapsible headwall form constructed to embody a double culvert;

Fig. 2 shows the collapsible head wall form of Fig. 1 dismantled in certain particu- Patented Aw. 30, 1921.

lars with various parts so combined as to form a single culvert;

Fig. 3 is a perspective view of the showinginFigl;

F 4 is a rear perspective view of the showing in Fig. l; s e

Fig. 5 is a rear perspective view of the showing in Fig. 2;

-Fig. 6 is a top plan view of the showing in F ig.17 is a front elevation showing the head wallwith the angularly disposed wings locatedat theopposite end ofsaid head wall and showing certain details otconstruction, and is in all respects similar to F ig. v

Fig. 8 is a cross sectionalelcvation taken on the line w?w F ig. 6, and looking in the directon of the appended arrows;

Fig. 9 is a rear-elevation of the showing in Fig. 7; i Fig. 10 shows certain details of construction of one of the walls of the wing mom: he

Fig. 11 represents a spreader of angled material which extends between the wing members for retaining same in position;

Figs. 12 and 13 show details of clip or strap members used in connection with the invention Fig. 14 is a wall form;

4 Fig. 15 is a side elevation of a wing memher and showing certain vertical sections detached from each other.

Corresponding parts in all the figures are designated by the same reference characters.

Referring to the drawings, X designates a head wall form and Y and Z wing members used in connection with the head wall form, which elements are used in practising all embodiments of the invention.

The head wall form X includes a pair of side walls 1 and 2, each of which comprises a plurality of main form sections, B, C, E, a and b. The wing members Z and Y which are identical in construction are made u of a plurality of main form sections A 1 front and back, and KL front and back. In addition to the main form sections designated there are extension fillers intendedto cooperate with the main sections and which are designated by sub-members as B B 13 and B for the fillers below the main form section B, and likewise for the extension fillers below the form section C and the extension fillers below KL and AR of the front wing members. Both the main form sections and the extension fillers comprise a plurality of longitudinally extending sections arranged one above the other. For example, the main form section B shown in Fig. 7 consists of a plurality of longitudinally extending sections, all of which are of equal length, and joined to and maintaining said sections in position are means 3, such as angle irons which are joined to each of the sections by means of bolts or screws 4. It will be observed that the means 3 is of a length suiiicient to extend the distance embraced by the plurality of section members, while other angle iron members or means 5 and'6 extend from a bottom sectional member 7 upwardly and beyond the last of sectional members 8 of the main form section B. Each of the angle iron members 3,'5 and 6 consists of angle material of two portions arranged at approximately right angles, one of the said portions being perpendicular and the other being provided with supporting means for attachment to the sections of the main form. The main form section C is provided with angle irons 9 and 10 joined to said member by means of bolts or screws and one of the faces of said angle irons co-acts with one of the faces of the means 8. The main form section E is likewise provided with two angle irons 11 and 12, one of which as 11 filler for the back of the head has an extension beyond the vertical height I of the section E and the other of which as 12 only extends the distance embraced by the section E. As to the other sections, the angle irons are joined to each of the sections comprising E. It will be observed that a face ofthe angliron 11 abuts against or co-acts with a face of the an le iron 1O and wherever this occurs, as in the case of i the means 8 and the angle iron 9, as well as the angle iron 10 and the angle iron 11, bolts are passed through perforations in said faces of the angle irons for joining the sections B, C and E together so that a smooth wall will result. It will be observed that each of the main form sections 13, C and E just described have the same vertical height; that is to say, they are made up of an equal number of sections or units. Mounted upon certain of the units of the main form sections B, C and E are clips 13, which clips may be strap members, with out-turned ends secured to each'of said units. Each of the wing members Y and Z on what would be considered the front of said wing members, as AR and KL (see Fig. 10) comprise for their inside wall portions as 1 1 and 1.5 a plurality of units arranged one above the other in an ascending relation. The R and K front of the wing sections Z and Y are made up of units which have one of their faces beveled so that each of the sections K and R resemble a right triangle with a hypotenuse 16 and two leg portions 17 and 18. This of course gives the top of the walls a downward sloping appearance. It will be observed, referring to Fig. 10, that all the units of the sections K and R- of the wing members are fixedly held together by means of bars 19 having a plurality of means 20 passing therethrough and embedded in each of the units comprising the sections R and K. Likewise bars 21 hold together further units comprising the sections R and K. Clips 13 are also mounted upon each of the sections K and R. Mounted on what would be the beveled portion or the hypotenuse 16 of the sections R and K and extending almost the entire length of the edge portion thereof, is an angle iron 22. One of the angles is attached to each of the unitsby means of bolts or screws or other means 23. The angle iron is so arranged that the opposite leg portion is above the surface or the peripheral edge portion 16, so that a guide way is formed between the inside surface of the angle iron and the edge 16. The front member A is intended to cooperate with the front member R, and the front member L is intended to cooperate with the front member K. The front members A and Dam each provided with bars 24 and 25 which cross transversely each unit comprising A and R and have means passing through each of the bars and embedded in each unit for maintaining the units in a fixed relation. tends beyond the last of the top units and is of an angle formation. A plurality of straps 26 provided with socketed portions are mounted on certain of the units making up the front portions of the and K and L, and the soeketed portions of said straps are intended to be in alinement so that the sections to which they are attached may co-act with one another and a long pin placed through the socketed portions, so that the two sections comprising each of the sections may be joined. The front sections A and L are provided each with straps or clips 13.

The sub-section fillers which are designated by sub-section numbers in addition to the main form. section letters, as before mentioned, are formed of independent units and are not joined rigidly or fixedly together by means of angle irons or other means, as in case of the main form sections. Of course this fact would be obvious from the term used sub-section filler. Each of the subsection fillers comprising the front head wall is of the same size, that is, in longitudinal length, as the length of each of the units making up the main form sections and each unit as B B B B and C etc, have strap members or clips 13 mounted thereon, and it will be observed by referring to the figures that the strap or clip members are in vertical alinement with each other, so that when bars 0 are placed beneath the clips 18 they look the different sub-section fillers with the main form sections and tend to keep the units and the sections in alinement. Thus the bars 0 may be termed lock and alining bars. As before mentioned, a number of the clips 13 are mounted on each of the units comprising the subsection and a number of the bars 0 are used in making the head wall form. It is not believed that a detail description of each of the sub-sections with their clips and bars is necessary, as they are all similar to the main sub-section fillers, and a cursory examination of Fig. 7 will reveal their relation to each other. The sub-section fillers making up the front portion of the wingmembers KL and AR have on each unit as K L and AR clips 13 and straps 26 provided with sockets so that the pin that passes through the sockets in the straps 26 attached to the main form sections will also pass through the sockets in the straps attached to the sub-section fillers AR or KL and hold the filler members in relation thereto. Bars 0 likewise pass through the clips 13 joined to the units making up the subsection fillers for the front wing members AR and KL. It will be obvious that the front portions K and R of the wing members Z and Y may be swung on the hinge members formed by the straps 26 so that any desired angle The bar 25 exsections A and R,

may be obtainable with relation to the wall 1 of the head wall X. It is of course realized that different railway companies build culverts and head walls to conform to certain standards, and because of this fact various lengths of spreaders d may be placed against the front as at 27 and 28 to hold the sections R and K in a fixed angled position with relation to the wall 1 of the head wall X. This spreader (Z is preferably formed of angle iron so that it may act as a bracket for another member 6 which oins a unit of some one of the main form sections of the wall 1 of the head wallX. It will be noted by referring to Fig. 8 that the member 6 abuts against one of the units as 28 and against the inside portion as 29 of one of the angularly disposed v portions of the spreader d. This serves to help retain the wall 1 in an and acts as a lock wings Y and Z.

As previously stated, the wings Z and Y have front and back main form sections KL and AR and the front form sections have just been described. The back form sections making up KL and AR are shown in. detail in Fig. 15. It will be observed that the construction is almost identical with the con struction of the front portion, with the exception that an additional member M is interposed between K and L, and a member N between A and R. In the latter cases the main form sections M and N have the straps 26 instead of the main form sections L and A. The main form sections M and N are used for closing the open ends or the space formed by the parallel pair of wall members 1 and 2 making up the head wall X. Obviously a plastic material were poured between the walls 1 and 2 it would be necessary to have some means at the ends thereof to confine the material, and the members M and N act in this capacity. The subsection fillers M, M etc, and sub-section fillers N, N etc, have mounted on their opposite ends straps 26 provided with sockets, and these straps and sockets combine with similar straps mounted on an end of each unit making up the subsections for the main section K and R. It will be noted that the sub-sections, as L, L etc, have mounted thereon straps provided with sockets, which sockets co-act with the sockets of the straps 26 on the subsections M, M and N, N respectively. A retaining pin is passed through the sockets of the straps 26 in order to hold the main form section M to the main form section K and in addition, to hold each of the sub-sections together where sub-sections are used. As previously described, certain of the units making up the main form sections are provided with clips 13, all of which clips lie in the same plane so that look bars 0 may be passed between said clips to retain the said sections and the main form sections in relaupright position between the wall and the in Fig. 9

tion each to the other. It will be observed that the outside or the outer main form sections K and R are beveled and correspond to the edge portions 1a and 15 formerly described. Angle irons 29 are placed adjacent the beveled edges of the main form sections K and R. Likewise each of the main form sections M, K and L, as well as A, R and N are provided with bars 19 having means passing through said bars and embedded in each of the units forming the main form sections for retaining each of the units in a fixed relation to each other.

Theback of the head wall form would obviously include the back members L and A, and in addition includes two main form members a and Z), as well as sub'section fillers a, 7), etc. Between the main form sections A and a and between L and Z) are disposed filler members 9 provided with cut-out or curved portions 30. The filler members are split as shown in Fig. 14, and the two curved portions 30 are so united as to form an opening for an oval concrete or round pipe, which of course is necessary when a culvert is to be formed in order to allow water to pass therethrough. T he main form sections a and]; have at each end angle irons 31 and 32 which join each of the units making up a and Z2 and hold them in a fixed relation. The angle irons 31 extend from the bottom unit making up a and 1; respectively beyond the edge of the last unit making up each of the main form sections a and b. The angle iron brackets 32, however, extend from the bottom unit making up a and Z) and slightly beyond the last unit making upthe last unit of the forms. The angle iron 32 of the form a and the angle iron 31 of the form Z) have one each of their faces abutting against one another, and means are passed through both of the faces for retaining the sections a and Z) in a definite and fixed relation each to the other. Referring to Figs. 7, 8 and 9, it will be seen that there are additional main sections designated as 5A and 5B, and 6A and 6B, and that 5A and 6A are longer than 53 and 63. Both 5A and 5B are provided at an end portion with angle iron brackets 33 and 34. respectively, and one of the angle faces of each of the brackets co-acts, each with the other, so that retaining means passing through same will tend to hold the form sections 5A and 5B in a rigidly fixed position. It will be observed by referring to Fig. 7, that the angle irons 25, 6, 5 and 9 coact with the units making up the form section 5A and that the angle irons l0, l1 and 25 co-act with the units making up the form section of 53. Means such as bolts or screws are passed through holes in each of the angle irons so as to retain the units composing 5A and 5B thereto. The rear construction of 6B and 6A shown shows that 613 and 6A are united by means of angle iron brackets 35 and 36, and that means are passed through certain of the faces making up 35 and 36 for retaining said form sections together. Likewise the bars 31 which extend beyond the main sections a and b are joined to the main form section A, and that the long bars joined to the main form sections A and L join the main form sections 613 andGA respectively. Stay bolts 37 hold the members M and N in position between the walls 1 and 2 of the head wall form X and bolts 38 and 39 likewise extend between K front and K back for holding each of the walls making up the wings Z and Y in a fixed relation each to the other. End boards are placed in the intervening space adjacent the rods 38 and 39 of the wing members Z and Y so that concrete or other plastic substance will not run out of same. In addition, cap boards (see Fig. 1), slide between the groove formed by the beveled top of the sections K and R and the inner surface of the angle irons 22 and 29 joined to said sections. These caps are made up of a plurality of small plates and are for the purpose of retaining the concrete or other plastic substance within the confined space formed by each wing member Z and Y. Additional bracing means it (see Fig. 8), aroused between the sections 5A and 5B and the spreader cl. Fig. 8 shows a fragmentary portion of a concrete pipe extending through the culvert.

Referring to Fig. 7, if the various subsection fillers as B, C, E, R and L were not used this would reduce the height of the mold and consequently a different size filler as shown in Fig. 1e would have to be used to accommodate the concrete or other pipe. By retaining the members 6A and 5A and'discontinuing the use of the main form section B a culvert similar to that shown in Figs. 2 and 5 would result. Thus a discontinuance of any one of the main sections 13,0, or E would change the dimensions for a single culvert in one direction, while the addition of the sub-section fillers would raise the height of the mold corresponding to the size of pipe used- After the mold has been built to the desired size and for the number of cul verts desired, cap boards 15 are placed in the open portions of the wing members so that any concrete poured into the top of the head wall form would flow into each of the wings and be retained therein. After the concrete has hardened suhiciently the sub-section fillers as well as the main form sections may be removed and the entire device in a collapsed condition may be transported to where another culvert is desired.

It is obvious that many changes and modifications may be made in practising the invention, all however, within a fair interpretation of the invention as described and set forth in the following claims.

Having thus disclosed my invention, I claim and desire to secure by Letters Patent:

1. A mold for culverts, including a head wall provided with angularly disposed wing members at each end thereof; each of said wing members and the head wall comprising two spacedly arranged wall members formed of independent longitudinal sec tions arranged one above the other; detachable means for maintaining the sections of said walls in locked alinement, and means joining the wing members with one of the walls of the head wall for maintaining the former members in position.

2. A mold for culverts, including a head wall provided with angularly disposed wing members at each end thereof; each of said wing members and the head wall compris- -1ng two spacedly arranged wall members formed of independent longitudinal sections arranged one above the other; detachable means for maintaining the sections of said walls in locked alinement, and means join ing the wing members with one of the walls of the head wall for maintaining the former members in position; there being spreaders joining the wing members for maintaining the same in position.

3. A collapsible head wall form, including a central pair of side walls and angularly disposed wing members, each of which comprises a plurality of longitudinally extending sections arranged one above the other, means detachably joined to certain of said sections for maintaining the same in position, and guide ways comprising clips with out-turned ends secured to other sections, and alining and locking bars confined by the clips, whereby each section may be so held as to form a rigid wall.

4. A head wall mold for culverts, comprising spaced parallel wall members, said walls comprising main sections and subsections formed in different lengths, whereby different sized head walls may be formed; said main sections comprising a plurality of longitudinally extending units, means joining said units for holding the units in a fixed position; guide-ways comprising clips with out-turned ends secured to certain of the units comprising the main sections, and to the units making up the sub-sections, and alining and locking bars confined by the clips, whereby the main sections and subsections may be so held as to form a rigid wall.

5. A mold for culverts, including a head wall and wing members each of which comprises two spacedly arranged wall members, the said head wall and the said wing members each being made up of main sections and sub-sections formed of units; said main sections comprising a plurality of longitudinally extending units, means joining said units for holding the units in a fixed position; guide-ways comprising clips with out-turned ends secured to certain of the units comprising the main sections, and to the units making up the sub-sections, and alining and locking bars confined by the clips, whereby the main sections and the subsections may be so held as to form a rigid Wall.

6. A mold for culverts, including a head wall provided with angularly disposed wing members at each end thereof; each of said wing members and the head wall comprising two spacedly arranged wall members formed of independent longitudinal scctions; means for maintaining the sections of said wall members in locked alinement, and means joining the wing members with one of the wall members of the head wall for maintaining the former members in position; said wing members being provided with means whereby the angular relation of same with. the head wall may be adjusted.

7. A mold for culverts, including a head wall and wing members, each of which comprises two spacedly arranged wall members formed of independent longitudinal sections detachable means for maintaining the sections of said wall members in locked alinement, and means joining the wing members with one of the walls of the head wall for maintaining the former members in position; each of said wing members having one of its walls formed in separable vertical parts joined by hinged means, one of which parts acts to close the ends of the head wall.

8. A mold for culverts, including a head wall and wing members, each of which comprises two spacedly arranged wall members formed of independent longitudinal sections; detachable means for maintaining the sections of said wall members in locked alinement, and means joining the wing members with one of the wall members of the head wall for maintaining the former members in position; means for maintaining the wall members of the wing members in spaced relation; said wing members having a sloping top surface and means for closing the open top between the spaced wall members.

9. A mold for culverts, including a head wall and wing members, each of which comprises two spacedly arranged wall members formed of independent longitudinal sections; detachable means for maintaining the sections of said wall members in locked alinement, and means joining the wing members with one of the wall members of the head wall for maintaining the former members in position; means for maintaining the wall members of the wing members in spaced relation; said wing members having each a sloping top surface and means for closing the open top between the spaced wall members, the confined space between the wall members of the head wall communicating with the confined space between the wall members of the wing members, so that when a plastic substance is poured into the space confined by the wall members of said head wall it will flow also into the spaces confined by wall members of the wing members.

10. A mold for culverts, including a head wall and wing members each of which 00111 prises two spacedly arranged wall members, the said head wall and the said wing members each being made up of main sections and sub-sections formed of units; said main sections comprising a plurality of longitudinally extending units, means joining the said units for holding the units in a fixed position; guide-way members secured to certain of the units comprising the main sections and to the units making up the subsections, and alining and locking bars confined by the guide-way members, whereby the main sections and sub-sections may be so held as to form a rigid wall.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE F. ZAUN.

Witnesses:

J W. Woon,

E. LEEPER, 

